干旱区生态环境知识资源中心(Arid): Characteristics of the turbulence intermittency and its influence on the turbulent transport in the semi -arid region of the Loess Plateau

Arid

DOI	10.1016/j.atmosres.2020.105312
	Characteristics of the turbulence intermittency and its influence on the turbulent transport in the semi -arid region of the Loess Plateau
	Wei, Zhuorui; Zhang, Lei; Ren, Yan; Wei, Wei; Zhang, Hongsheng; Cai, Xuhui; Song, Yu; Kang, Ling
通讯作者	Zhang, HS (corresponding author), Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Lab Climate & Ocean Atmosphere Studies, Beijing 100871, Peoples R China.
来源期刊	ATMOSPHERIC RESEARCH
ISSN	0169-8095
EISSN	1873-2895
出版年	2021
卷号	249
英文摘要	In this study, observational data from the Semi-Arid Climate and Environment Observatory of Lanzhou University (SACOL) in July 2008 were used to analyze the characteristics of the turbulence intermittency and its influence on the land-atmosphere turbulent transport over the complex terrain of the semi-arid region of the Loess Plateau in summer. Using the Hilbert-Huang transform (HHT), the local intermittent strength of turbulence (LIST) was calculated based on pure dynamics through an automated algorithm to characterize the turbulence intermittency in this region. But LIST misjudged the actual turbulence intermittency under the condition of weak wind and strong radiation. The thermal effects cannot be ignored in this situation and a thermodynamic intermittency correction factor LISTThermal is suggested to modify LIST. Then a new intermittent strength index LISTReviseis proposed, which is assumed to be the weighted average of LIST and LISTThermal according to the stability parameter z/L. LIST (LISTThermal) is closely related to the near-surface wind-speed (sensible heat flux). Most misjudgments of LIST to turbulence intermittency are corrected, and LISTRevise is more consistent with the general diurnal variation of turbulence intermittency. There are overestimations in turbulent standard deviations and fluxes calculated by conventional eddy covariance (EC) method due to sub-mesoscale motions and turbulence intermittency, producing inaccurate quantifications of turbulent mixing and transport in the planetary boundary layer parameterization schemes. After eliminating the influence of it, the relationship between the normalized standard deviations of different meteorological variables and z/L is more consistent with the Monin-Obukhov similarity rule under stable and unstable stratification.
英文关键词	Thermodynamic Turbulence intermittency Turbulent transport Loess Plateau
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000596388200004
WOS关键词	NOCTURNAL BOUNDARY-LAYER ; EMPIRICAL MODE DECOMPOSITION ; HEAVY HAZE POLLUTION ; CARBON-DIOXIDE ; WIND-SPEED ; SIMILARITY ; CHINA ; SCALE ; MICROFRONTS ; DISPERSION
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	兰州大学 ; 北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347753
作者单位	[Wei, Zhuorui; Ren, Yan; Zhang, Hongsheng] Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Lab Climate & Ocean Atmosphere Studies, Beijing 100871, Peoples R China; [Wei, Zhuorui; Zhang, Lei] Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou 730000, Peoples R China; [Wei, Wei] Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100871, Peoples R China; [Cai, Xuhui; Song, Yu; Kang, Ling] Peking Univ, Dept Environm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Wei, Zhuorui,Zhang, Lei,Ren, Yan,et al. Characteristics of the turbulence intermittency and its influence on the turbulent transport in the semi -arid region of the Loess Plateau[J]. 兰州大学, 北京大学,2021,249.
APA	Wei, Zhuorui.,Zhang, Lei.,Ren, Yan.,Wei, Wei.,Zhang, Hongsheng.,...&Kang, Ling.(2021).Characteristics of the turbulence intermittency and its influence on the turbulent transport in the semi -arid region of the Loess Plateau.ATMOSPHERIC RESEARCH,249.
MLA	Wei, Zhuorui,et al."Characteristics of the turbulence intermittency and its influence on the turbulent transport in the semi -arid region of the Loess Plateau".ATMOSPHERIC RESEARCH 249(2021).